Shock-absorber.



A. CAMPURINL SHOCK ABSORBER.

APPLICATION FILED MAY 7, 191a.

v Patented Nov. 11, 1913.

nueusrmn' cnivrro'nmi, or cnxoneo, ILLINOIS.

To all whom it may concern: I I

Beit known that I, AUGUSTINE OAMro- .RINI, a subject 'ofthe Kingof'Italy,res'iding at Chicago, int-he county of Cook and StateofIlli-nois, have invented certain new and useful Improvements inShock-Absorbers,

.of-which the following is a specification.

This inventionrelates toshock absorbers adapted for use on vehicles, andthe like,

and aims-"to providea device of this character which will beparticularly adapted for application to automobiles. 7

invention isto providea shock' absorber of simple construction, which:will offer but little resistance to thecompress'ion ofthe vehiclesprings'but' will immediately become.

effective upon upward movement of the springs to prevent-unduerebound.

Another ob]e'ct is' to provide a shock absorber of such constructionthat the wear on the various moving parts willbe reduced to a minimumand to provide friction means for retarding'and decreasing the reboundofthe vehicle body, said means being arranged to travel in one directiononly and by an in-- termittent motion.

Other objects-are to provide. a shock absorber, which will be simple inconstruction, cheap to manufacture-and easy' to assemble and, onewhichwill-be effective" in operation and also strong and durable but, at-thesame time, as light as iscompatible with the strength required.

For the purpose of facilitating the explanation of my present invention,I have shown on the accompanying drawings a preferred embodiment thereoffrom a consideration of'which when taken in connectionwith the followingdescription the invention will be readily understood.

Referring to the drawings Figure 1- is .a

side elevation of a shock-absorber embodying my invention; Fig. 2 is atransverse sectional view on the line- 2- -2 of Fig. 1; and Fig. 3 isverticalsectio'nal view on the line 3-3 of Fig. 2.

- On the drawings reference character 5 indicates an arm er thelabsorber which may be pivotally connected by a bolt 6, or other fasteningmeans, to an ear or bracket 7 at- Specification of Letters Patent. e uanon neami 7, 912. Serial No. 763,002]

.One of the primary o'b ects of the present- SHOCK-ABSORBER.

tached to the vehicle body orframe in the usual manner. 8 designates apair of arms,

Patented Nov. 11, 1913.

spaced apart adistance'equal to the thick n'ess of the armo'andconnected by a bolt 9', or other fastening means, to a stud or'earthe vehicle by a clip 13, or in any other pre- 11 which may be fastenedto the axle l2-of ferred manner. The arms 8, which are disposed inparallelism with each other, "are "enlarged at theinupper endsto-provide a casing comprising the friction members 14 provided withoppositely disposed friction surfaces 15, preferably of concaveformation.v Coiiperating with these friction sur 'faces is a pair offriction cones 16-, the outer facesofwhich are shaped toconform to a'ndhave frictional engagement. with .the friction surfaces 15 of thefriction members.

The arm 5 terminates at its lower end in a head 17 forming, in effect,an oscillatory element adapted tooscillate between the friction conesupon a bolt 18 connecting and holding the various parts in assembledrelation'. The head,17- is extended laterally in both directions to liewithin the friction cones and 'is-provided on its periphery with aseries of notcheseach having a radially disposed wall 19 and an inclinedwall or surface 21. Thehead is also formed to provide a centrallyarranged radially extending flange 22 which projects outwardly betweenthe adjacent edges .of the friction members 14 to'fo-rm a substantialclosure for the cas- "wa1ls'23 surrounding the laterally projectingportions of the head 17.

The notches in the head 17 are of sufficient depth to accommodateattheir deepest end rollers 24: which extend through apertures 25 formedin the flange 22, the aperturesbeing of sufficient size to permitlateral travel of the rollers in the notches. hen the axle of thevehicle moves upwardly or the body moves downwardly the head 17 travelsrelatively to the friction cones ina counter-clockwise direction viewingFig. 3. The'rollers 24 during this movement of the head lie in thedeeper ends of the notches and substantially against the vertical Walls19. so that no resistance is ofthe cones.

travel with the head. Frictional resistance to this movement is affordedby the frictional contact between the outer walls-of the cones and theinner walls ofthe friction members 14.

It :will thus be apparent that the absorber is effective only. uponrebound and that practically no resistance is offered to the downwardmovement of the vehicle body but that the upward movement is resisted bythe friction between the friction cones and the friction members. Theamount of this friction may be regulated by the springs 26 surroundingthe ends of the bolt 18 and pressing a ainst the friction members, thepressure 0 these springs being adjusted by tightening or loosening thenut 27 on the bolt. In order to insure slight movement of the rollers24, which is necessary to effect the connection between the head 17 andthe friction cones, I prefer toemploy suitable expansion springs 28which-are disposed in sockets in the vertical walls- 19 and yieldinglyurge the rollers 24 along the inclined surfaces 21. W'hile these springsare not essential if the parts are accurately constructed, nevertheless,they may be employed as a precautionary measure to insure proper andimmediate action of the device. In actual practice the walls of thefriction members 14 are spaced slightly from the flanges 22 so thatthese members may bev clamped together to provide the requisite frictionagamst the friction cones.

:,;It is believed that my invention will be understood from th e:eforegoing without further description and- Iitt'will be obvious thatvarious changes in the structure of the mechanical details disclosed maybe resorted to without departing from the spirit of the invention.

It will, also, be manifest that Iliave provided a shock absorber whichis of simple construction and very durable and that the wearing of theparts is. reducedto a m nimum by reason of the fact that the frictioncones are adapted to travel only in one direction so that the point ofcontact between the rollers 24 and the walls 23 inchanged at eachoperation and, also, by reason of the fact that the rollers 24 rotateslightly at each operation so that new wearing surfaces are continuallypresented.

I claim:

1. In a shock absorber, the combination of a pair of oppositely-disposedfriction members, a pair of friction cones arranged to frictionallyengage said members, an element disposed between said friction cones andarranged concentrically therewith, said element being provided with aplurality of inclined surfaces and a centrally disposed; peripheralflange projecting between the adjacent edges of said friction members,rollers carried by said central element in cooperative relat on withsaid inclined surfaces, and :1

means for yieldingly urging said rollers into position tqestabhsh africtional connection between said surfaces and '.said cones.

' 2. In a shock absorber, the combination of a pair of parallel armsterminating in op"- positely disposed friction surfaces, a central armterminating in a head located between and concentrically with saidfriction surfaces, friction devices interposed between said head, saidhead being provided with a plurality of inclined surfaces opposed tosaid inner walls of the friction devices, and rollers carried bysaidhead in cooperative relation with said inclined surfaces to establish africtional connection between said engage said members, an elementdisposed between said cones and concentrically therewith, said elementbeing provided with a plurality of inclined surfaces, rollers carried bysaid element in cooperative relation with said inclined surfaces, and.means for yieldingly urging said rollers into position .to establish africtional connection between said surfaces and said cones. v

4. In a shock absorber, the combination of a pair of oppositely disposedfriction memhere, friction cones arranged to frictionallyengage saidmembers, an element disposed d between said friction cones and pivotedconcentrically with said cones and friction members, said element beingprovided with a plurality of inclined surfaces and centrally disposedperipheral flanges projecting radially between the adjacent edges ofsaid friction members, and rollers carried by said central element incooperative relation with said inclined surfaces to establish -africtional connection between said surfaces and said cones.

5. Ina shock absorber, the combination of a pair of oppositely disposedfriction membars, a pair of friction cones arranged o emme.

/ frictibnally engage said members, an elemen'i', dispesed between saidfriction cones and arranged concentrically therewith, said element beingprovided With a plurality of inclined surfaces, and rollers carried bysaid central element 1n cocpemtive relatlon wlth said inclined surfacesto establish a 11 10- cicnalconnection between said surfaces andWitnesses IRA J. WILSON, FRANKLIN W. WARDEN.

